Bookbinding machine



May 31, 1932. w. c. SCHMIDT BOOKBINDING MACHINE Filed Jan. 9, 1928 Patented May 31, 1932 UNITED STATES PATENT OFFICE WILLIAIE C. SCHMIDT, OF OAK PARK, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO T. W. & C. '.B. SHERIDAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK IBOOKBINDING MACHINE Application filed January 9, 1928. Serial No. 245,429.

As shown in my application Serial No.

206,723, it is generally customary in book binding machines to hold the lining material while cutting it to size by some sort of holding means, either pneumatic or mechanical.

Previous to this time both forms of holding devices have been attended with certain disadvantages. The pneumatic holders, whether pressure or vacuum, are not always positive in action and certain in functioning, and are also easily put out of order by leaks t in the pneumatic line. Moreover, pneumatic holders require auxiliary apparatus, such as pumps, valves, etc., to furnish pressure or vacuum and are costly to install and operate. At the same time, the mechanical holding devices heretofore in use have been unsatis- `factory chiefiy because they were complicated mechanisms that required constant attention, frequent adjustment and became easily disarranged.

An object of this invention is to provide a lining paper holding device that is simple in construction and easily attached to any ordinary book binding machine.

Another object of this invention is to provide a lining paper holding mechanism that is positive and certain of action, ease of adjustment, and requires little or no attention.

Yet another object of this invention is to provide a lining paper holding device of low cost and requiring no auxiliary apparatus for its operation.

Vith these and other objects in view which may be incident to my improvements, the invention consists in the parts and combinations to be hereinafter set forth and claimed, with the understanding that the several necessary elements comprising my invention may be varied in construction, proportions and arrangement, without departing from the spirit and scope of the appended claims.

In order to make my invention more clearly understood, I have shown in the accompanying drawings means for carrying the same into practical effect, without limiting the improvements in their useful application to the particular constructions, which, for the purpose of explanation, have been made the subject of illustration.

In the drawings:

Figure 1 is a side elevational view of my apparatus attached to a book binding machine and showing its several elements in first operative position.

Fig. 2 is a. similar view to Figure 1 showing the several elements in second operative position.

Fig. 3 is also a similar view to Figure 1 showing the several elements in third or final operative position.

Fig. 4 is a top plan view of the device.

Referring by numerals to the drawings wherein the same elements are designated by like symbols throughout, and more particuvlarly to Figure 1, the numeral 1 designates the frame of a book binding machine having bolted to the top thereof a knife blade 2 which Vco-operates with a knife table 3 adapted to reciprocate in a channel 4 formed in the frame 1 and in alignment with the path of the back pocket 5. On top of the knife table 3 is mounted a backing table 6, preferably fiexibly constructed, adapted to receive the lining material 7 fed under the knife blade 2 by certain feed mechanism of the book binding machine not shown. The knife table 3 is reciprocated by an actuating link which receives its motion from an oscillating bell crank lever in the lower part of the book binding machine (not shown),

the travel of the knife table 3 being sufficient to cut the lining from the feed strip and apply it to the book. rlhe fixed knife and the feed channel beneath it constitute means for supplying lining components to the table.

Attached to the frame 1 of the book bindi ing machine by a bracket 9 and bolts 10 and 11, is a cam bar 12 having two specially shaped cam faces A and B.

Attached to the reciprocating knife table 3 by suitable bolts 13 are two elongated brackfil ets 14 having two bosses 15 and 16 in which are ournalled shafts 15a and 16a. Mounted upon shaft 16a is a cam lever 17 which carries at its lower end a cam roller 18 held in close contact with face A of cam bar 12 by a spring 19. At the upper end of cam bar 17 and extending at a right angle thereto is an arm 20 which has a specially curved cam face 21 on its under side.

Fixedly mounted upon shaft l-a is a cam lever 22 which carries at its lower end a cam roller 22a held against face B of cam bar 12 by a spring 23. Also fixedly mounted on shaft 1li-a are a plurality of arms 24; in the upper ends of which is journalled a shaft 24-a, on one end of which is fixedly mounted a bell-crank cam lever 25 and a plurality of spring fingers 26 adjustably attached by bolts 27 and set screws 28. Cam lever carries at one end a cam roller 29 which is adapted to coact with cam surface 21 of arm 2O (inthe operating positions shown in Figures 2 and 8) by a spring 30 attached at one end to the lower end of lever 25 and at the other end to a projection 31 of the cam lever 22.

ttached to the frame of the book binding` machine by a bracket (not shown) is an adjustable set screw 32 against which the rounded end 33 of the bell crank cam leveri2 rests as a stop, when the mechanism is in the lowest operating position (as shown in Figure 1). The set screw 32 is so adjusted that when the mechanism is in the lowest operating` position, the spring finger26 is held up off of the lining 7 so that the binder feed mechanism can push the binder strip out under knife 2 onto backing table 6. IVhen in this position, spring 30 is under tension so that when the bell crank cam lever 25 moved up, by knife table 3 through brackets 14 and arms 24,`its rounded end 33 slips o' the end of screw 32 and spring 3()l pulls the bell crank lever 25 down bringing the spring iinggirs 26 down in firm contact with the lining The operation of this invention may be readily understood by 'reference to Figures 1, 2 and 3 which show the mechanism in its cycle of operating positions.

In Figure 1 the mechanism is shown in lowest operating position and the knife table 3 is just starting on its upward stroke. The lining strip 7 has just been pushed out under knife 2 by the liner feeding device (not shown) onto backing table 6.

In Figure 2 the knife table has travelled up about one half its stroke carrying with it brackets 14, shafts 15S-a and 16-a, cam levers 17, 22 and 25, and spring fingers 26, which last during this part of the stroke are held in firm contact with'lining 7 which has been cut from its strip by knife 2 and'knife table At this point the cam roller 18 comes in contact with cam surface A of cam bar 12 and cam 17 is rotated a few degrees in a clockwise direction to bring the end of arm 20 over cam roller 29 so that it will Contact with cam surface 21 of arm 20.

Continuing on its upward stroke, knife table 3 carries brackets 14- and associated vmechanism up, and cam roller 22-a comes in contact with cam surface B of cam bar 12 which causes cam lever 22, shaft l-a and arms 24 to rotate through a small arc in a counter-clockwise direction, Also cam roller 29 continues to roll along surface 21 of arm 20 which combined with the rotation and upward travel of bell crank 25 causes spring fingers 26 to be raised from contact with lining 7 and retracted from the path of travel of backing table 6 which continuing up presses and applies the lining to the back of the book.

Upon the return stroke of knife table 3 and backing table 6, the holding mechanism returns'to the position shown in *igure 1 and the cycle of operation is complete.

The only adjustments required are the set screws 28 and the bolts 22 on the spring fingers 26 to regulate the tension of the spring fingers when in contact with the lining 7 and the height of set screw 32 which determines the position of the spring fingers 26 in initial'operating position.

From what has been described above, it is seen that I have provided a binder holding mechanism that is extremely simple in construction, fuily automatic in its operation, and requires little or no adjustment.

While I have shown and described the preferred embodiment of my invention, I wish it to be understood that I do not confine myself to the precise details of construction herein set forth, by way of illustration, as it is apparent that many changes and variations may be made therein,`by those skilled in the art, without departing from the spirit of the invention, or exceeding the scope of the appended claims.

I claim:

1. In a book binding machine, means to cut a lining strip, a binding holding mechanism comprising a flexible spring finger adapted to be brought in contact with and hold a lining strip during the process of cutting and a cam actuated lever adapted to release said spring finger from said lining strip.

2. In a book binding machine, a binding holding mechanism comprising a plurality of cam actuated spring fingers adapted to hold a lining strip to a backing table and automatic means for releasing said spring fingers and withdrawing them from the path ofsaid backing table.

3. In a book binding machine having means for cutting a lining' strip, a binding lholding vmechanism comprising a plurality of spring fingers, means for automatically applying the free ends of said ngers to a lining strip, means for holding said fingers on said lining strip while cutting the same, and means for automatically releasing and withdrawing said fingers from said lining strip.

4. In a book binding machine having means for cutting a lining strip, a binding holding mechanism comprising a knife table, a movable backing table associated therewith, and means actuated by the movement of said backing table to engage and hold a lining strip on said backing table While cutting said lining strip and applying it to the back of a book.

5. In a book binding machine, a binding holding mechanism comprising a knife table, a backing table, a plurality of spring lingers adapted to hold a lining strip on said backing table, a cam lever adapted to cause said spring iinger to engage and hold said lining strip on said backing table and a second cam lever adapted to release said spring iingers from contact with said lining strip.

6. In a book binding machine, a binding holding mechanism comprising a plurality of resilient spring fingers adapted to hold a lining strip, a cam lever adapted to cause said spring fingers to engage said lining strip, a second cam lever to disengage said fingers from said lining strip, and a third cam lever adapted to withdraw said lingers Jfrom the path of travel of said lining strip.

7. In a book binding machine, a binding holding mechanism comprising a resilient spring nger, cam actuated means adapted to apply, hold, release and Withdraw said spring linger from a lining strip in cyclic succession and means for regulating the pressure of said finger on said lining strip.

8. A machine for applying lining to the back of a book, comprising means to cut the binding, and means forming an element of the cutting means to support the cut binding, mechanical means to hold the binding on the supporting means, and means for releasing and withdrawing said holding means as the lining is applied to the back of a book.

9. A machine for applying lining to the back of a book, comprising a flexible backing table, the table forming an element of a cutting means, and being adapted to support a lining, means to operate the table to apply the lining to the back of a book, and mechanical means to hold the lining on the table adapted to be released and withdrawn as the lining is applied to the backing of a book.

l0. In a book binding machine a table liftable to apply a lining component to the back of a book, means for supplying lining components to the table, a resilient retaining member adapted to contact upon and retain a lining component upon the table during its lifting toward the book, and connections operable during the lifting of the table for In testimony whereof I afliX my signature. 7

WILLIAM C. SCHMIDT. 

